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Inductive charging system

  • US 9,419,468 B1
  • Filed: 12/20/2013
  • Issued: 08/16/2016
  • Est. Priority Date: 12/20/2013
  • Status: Expired due to Fees
First Claim
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1. An inductive charging system, comprising:

  • a housing including an internal portion, the housing further including a first wall, a second wall opposite the first wall, and a third wall extending from the first wall to the second wall, wherein;

    the first wall, the second wall, and the third wall form a channel extending along an external length of the housing,the first wall configured to support at least a portion of an electronic device thereon; and

    an inductive charging coil disposed within the internal portion of the housing, the charging coil comprising a substantially annular central axis and a wire wrapped in a spiral configuration circumferentially around the central axis, the charging coil comprising;

    a first end disposed within the internal portion and proximate the first wall; and

    a second end substantially facing the first end, the second end being disposed within the internal portion and proximate the second wall, wherein the first end is spaced from the second end by a gap extending from the first end to the second end, the charging coil substantially surrounding at least a portion of the channel from within the housing such that the channel passes through the gap,wherein a portion of the first wall comprises an alignment key indicative of a location of the first end of the coil relative to the first wall, andwherein the charging coil is selectively energizeable to generate an electromagnetic field within the gap, the electromagnetic field being characterized by flux lines extending from the first end to the second end via the portion of the first wall.

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